This article reports that a team of geomicrobiologists has detected a new microbe, called Ferroplasma acidarmanus, surviving in some of the most acidic waters on Earth - a seemingly impossible pH near 0. That makes this critter, a member of the microbial kingdom Archaea, one of a few record-setting microbes that can survive in conditions usually toxic to life as we know it. A subscription to Science Magazine may be necessary to view this article.